EP1229159B1 - Compound needle - Google Patents

Compound needle Download PDF

Info

Publication number
EP1229159B1
EP1229159B1 EP00970083A EP00970083A EP1229159B1 EP 1229159 B1 EP1229159 B1 EP 1229159B1 EP 00970083 A EP00970083 A EP 00970083A EP 00970083 A EP00970083 A EP 00970083A EP 1229159 B1 EP1229159 B1 EP 1229159B1
Authority
EP
European Patent Office
Prior art keywords
needle
blades
slider
hook
partition wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00970083A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1229159A4 (en
EP1229159A1 (en
Inventor
Masahiro Shima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shima Seiki Mfg Ltd
Original Assignee
Shima Seiki Mfg Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP1229159A1 publication Critical patent/EP1229159A1/en
Publication of EP1229159A4 publication Critical patent/EP1229159A4/en
Application granted granted Critical
Publication of EP1229159B1 publication Critical patent/EP1229159B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06—Sliding-tongue needles

Definitions

  • the present invention relates to a knitting needle used in a knitting machine. More particularly, the present invention relates to a compound needle comprising a needle body having a needle hook at its front end and a tongue constructed to be movable relative to the needle body and formed at the front end to cooperate with the needle hook so as to open and close the needle hook.
  • the previously proposed compound needle is so constructed that two blades of the slider are accommodated in an overlapped relation in a blade accommodation groove formed in the needle body.
  • the blades are formed to have thickness smaller than width of the groove so as to form a gap between the blades and the groove walls so that the blades can be supported to freely advance and retract in the groove.
  • the two blades are placed on a center line of the needle passing through the front end of the needle hook in the overlapped relation in the blade accommodation groove.
  • this presents the disadvantage that when the blades are advanced beyond the needle hook, the slider is abutted with the needle hook and is diverged right and left with increased sliding resistance, so that a burden is imposed on the slider and the needle hook. Further, when the blades are moved to their advanced positions beyond the needle hook, the stretch of the blades increases to a large extent.
  • This presents the problem for a knitting machine comprising a pair of front and back needle beds which are arranged in opposition to each other and on which knitting members, such as a sinker and a loop presser, are disposed adjacent to the compound needles, so as to be advanced and retracted with respect to a needle bed gap.
  • knitting members such as a sinker and a loop presser
  • the blades may move closely to the knitting members to occupy the space for allowing the loop on the tongues to be transferred to a needle on the receiving side, thus causing a knitting problem.
  • Increase in spacing between the needle hook and the blade groove can allow the stretch of the blades to reduce to that extent, but this leads to elongation of the needle body and the slider with respect to the lengthwise direction of the needle and further to increase in size of the carriage and the knitting machine itself.
  • the present invention provides a compound needle which comprises a needle body having a needle hook at a front end thereof and a slider having a tongue formed by two blades being combined in an overlapped relation and is so structured that the needle body and the slider are individually movable back and forth in the state in which the blades of the slider are supported in a blade groove formed in the needle body, wherein a partition wall having thickness smaller than that of the needle hook of the needle body is formed in the blade groove and the blades of the slider are accommodated in the blade groove to sandwich the partition wall therebetween.
  • This construction of the compound needle of the invention can provide the result that when the slider is advanced beyond the needle hook, the two blades, which are abutted with the front end of the needle hook and diverged right and left by the side surfaces of the needle hook at the front end thereof, are made to advance along lines deviating from a center line of the needle passing through the front end of the needle hook by the partition wall, so that the blades are stretched to a reduced extent in a widthwise direction of the needle, as compared with the conventional compound needle wherein two blades are advanced along the center line of the needle passing through the front end of the needle hook.
  • FIG. 1 is a view showing a forefront portion of a compound needle of the present invention which is in the state of being loaded in a needle groove formed in a needle bed
  • FIG. 2 is a view showing the detail of the respective parts of the compound needle
  • FIG. 3-a is a side view of the blades 11a and 11b
  • FIG. 3-b is a plan view of the blades 11a and 11b
  • FIG. 3-c is a plan view of the blades 11a and 11b in the combined state
  • FIG. 4-a is a sectional view of the forefront portion of the compound needle taken along line A-A of FIG. 1
  • FIG. 4-b is a sectional view of the same taken along line B-B of FIG. 1, FIG.
  • FIG. 5-a shows a slider which is in its retracted position
  • FIG. 5-b shows blades of the slider which are in abutment with a needle hook
  • FIG. 5-c shows the blades which are in their advanced position beyond the needle hook
  • FIG. 5-d shows a conventional compound needle whose blades are in their advanced position beyond the needle hook
  • FIG. 6 shows a forefront portion of the compound needle of the present invention whose slider is in its retracted position.
  • a compound needle of an embodiment of the invention comprises a needle body 3 and a slider 5.
  • the needle body 3 comprises a needle hook member 7 and a needle jack 9 separate therefrom. While the needle body may be formed by these parts being integrally formed, the needle body 3 in the illustrated embodiment is formed by forming these individual parts in combination.
  • the needle hook member 7 is provided with a hook portion 15, a blade groove 17 for accommodating a blade portion 11, a center body portion 19 for supporting a lower arm of a slider body portion 13, and a concave portion 21, provided at a rear end portion of the needle hook member, for connecting a front end of the jack, when cited in the order of arrangement from the front end side.
  • the needle hook member 7 and the needle jack 9 are formed to have the same thickness.
  • the needle jack 9 is formed to have thickness slightly smaller than width of the needle groove and has a curved elastic leg 23 extending rearwardly from the concave portion 21 and having a rear end to abut with a bottom of the needle groove. It also includes a control butt 25 projecting from around the center of the body portion of the needle jack 9 to engage with a cam mounted on a cam carriage (not shown), so as to be operated to advance and retract, so as to make the needle body 3 advance and retract.
  • the needle hook member 7 has a partition wall 41 formed in the blade groove 17 at a front end portion thereof.
  • the partition wall 41 is formed to be placed on a dashed line X-X passing through the front end of the hook 15 and drawn in a lengthwise direction of the needle 1 as shown in FIG. 5-a and projected vertically upwardly from the bottom of the blade groove 17.
  • the partition wall 41 is formed to be identical in height to a throat portion 10 of the needle hook member 7 at a portion thereof on the front end side of the needle and be continuous to the bottom of the blade groove 17 at a portion thereof on the rear end side of the needle.
  • the blade groove 17 is divided into two groove portions 17a and 17b by the partition wall 41, and the blades 11a and 11b are accommodated in the groove portions 17a and 17b, respectively, sandwiching the partition wall 41 therebetween.
  • the slider 5 comprises blades 11a and 11b and a slider body 13 formed separately from the blades.
  • the blades are formed by two plates of generally identical in shape to each other being combined in an overlapped relation, as shown in FIG. 3, and are accommodated in the blade groove 17.
  • the blades 11a and 11b have tongues 31a and 31b, formed at front end portions thereof, to abut with a front end portion 15a of the hook 15 and further have connecting portions 33a and 33b, formed at portions thereof on the rear side of the blade groove 17, to connect with the slider body 13.
  • Each of the blades 11a and 11b is bent outwardly at a location close to the connecting portion 33a, 33b so that when the blades are in the combined state, they can extend forwardly, keeping a space therebetween substantially equal to thickness of the partition wall 41, as mentioned later.
  • the blade 11b has a bend 35 formed therein. The bend 35 is put into abutment with inner side walls of the blade groove to prevent the slider 5 from moving awkwardly in association with the advancing and retracting motion of the needle body 3 and allow the needle body 3 and the slider 5 to advance and retract individually
  • the slider body 13 has thickness identical to that of the needle body 3 and has a control butt 49, projected from a rear end portion thereof, for controlling the advancing and retracting motion of the needle body.
  • 39 denotes a lower arm formed to be branched from the body portion and extended to a space in the center body portion 19 of the needle hook member 7.
  • the lower arm 39 has a longitudinal slot 51 formed by cutting it at one side surface thereof and a thru hole 53 formed on the longitudinal slot 51.
  • the projections 33a and 33b of the blade 11 are fixedly engaged in the thru hole 53 of the slider body 13 by caulking and the like.
  • FIG. 5-d Shown in FIG. 5-d is a conventional compound needle which has no partition wall and is so structured that two blades are combined in an overlapped relation with each other at a widthwise center of the needle.
  • size of the needle hook and thickness of the blades are depicted in an exaggerated form and also the slider body covering the blade groove from the above is omitted from FIG. 5.
  • the partition wall allows the two blades to be advanced along lines deviating from a dashed line X-X passing through the front end of the needle hook and drawn in a lengthwise direction of the needle 1, and as such can allow the blades 11a and the 11b to be stretched to a small extent and can allow the sliding resistance to reduce.
  • the blades 11a and 11b are extruded along the side surfaces 15a of the needle hook at the front end thereof, the blades 11a and 11b are brought into contact with the partition wall 41, which prevents portions of the blades 11a and 11b accommodated in the blade groove from being curved inwardly and, as a result, the blades 11a and 11b are prevented from being stretched out to a large extent.
  • the space for the partition wall is formed between the blades 11a and 11b by bending the blades 11a and 11b
  • the space for the partition wall may alternatively be formed therebetween by using a spacer to be inserted in between the two blades.
  • the partition wall 41 in the blade groove 17 may be formed along the entire length of the blade groove.
  • the partition wall may be formed at any other regions of the needle than the front end portion of the needle. It is preferable, however, that the partition wall 41 is provided in a front region of the blade groove including a region on the front end side of the needle, because the partition wall formed at the front end portion of the blade groove 17 can prevent the accumulation of the dirt and dust in the space between the blades 11a and 11b.
  • the compound needle of the present invention can provide a reduced sliding resistance and a reduced degree of stretch of the blades when the blades are advanced beyond the needle hook, as compared with the conventional compound needle wherein the two blades are made to close contact with each other to be combined and accommodated on the center line of the needle in the blade groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP00970083A 1999-10-27 2000-10-25 Compound needle Expired - Lifetime EP1229159B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP30548599 1999-10-27
JP30548599 1999-10-27
PCT/JP2000/007484 WO2001031102A1 (fr) 1999-10-27 2000-10-25 Aiguille composee

Publications (3)

Publication Number Publication Date
EP1229159A1 EP1229159A1 (en) 2002-08-07
EP1229159A4 EP1229159A4 (en) 2003-01-15
EP1229159B1 true EP1229159B1 (en) 2006-05-03

Family

ID=17945736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00970083A Expired - Lifetime EP1229159B1 (en) 1999-10-27 2000-10-25 Compound needle

Country Status (8)

Country Link
US (1) US6510713B1 (ja)
EP (1) EP1229159B1 (ja)
JP (1) JP3532897B2 (ja)
KR (1) KR100585262B1 (ja)
DE (1) DE60027753T2 (ja)
ES (1) ES2259614T3 (ja)
TW (1) TW528822B (ja)
WO (1) WO2001031102A1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100906752B1 (ko) * 2001-08-24 2009-07-09 가부시키가이샤 시마세이키 세이사쿠쇼 편기의 복합침
ITMI20012095A1 (it) * 2001-10-10 2003-04-10 Protti Fashiontronix S P A In Ago composito particolarmente per macchine rettilinee per maglieria
WO2004057081A1 (ja) * 2002-12-20 2004-07-08 Shima Seiki Manufacturing, Ltd. 複合針
EP2305868B1 (de) 2009-09-30 2012-11-21 Groz-Beckert KG Schiebernadel mit eingebautem Mittelsteg
JP5525344B2 (ja) 2010-06-18 2014-06-18 株式会社島精機製作所 横編機の複合針
JP5766430B2 (ja) * 2010-11-22 2015-08-19 株式会社島精機製作所 横編機の複合針
JP5875347B2 (ja) 2011-11-30 2016-03-02 株式会社島精機製作所 横編機の複合針
PT3418434T (pt) * 2017-06-19 2019-06-11 Groz Beckert Kg Ferramenta de tricotar à máquina, em particular, agulha de tricotar à máquina

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD114840A1 (ja) * 1974-09-04 1975-08-20
DE3151150C2 (de) * 1981-12-23 1984-09-13 Universal Maschinenfabrik Dr. Rudolf Schieber GmbH & Co KG, 7081 Westhausen Schiebernadel
JP2946323B2 (ja) 1997-05-01 1999-09-06 株式会社島精機製作所 横編機の複合針
US5937673A (en) * 1997-05-01 1999-08-17 Shima Seiki Manufacturing, Ltd. Compound needle of a flat knitting machine
CH691543A5 (fr) * 1997-05-27 2001-08-15 Steiger Sa Atelier Constr Aiguille à coulisse pour machine à tricoter.
DE19913822C2 (de) * 1999-03-26 2001-02-22 Groz Beckert Kg Schiebernadel mit geteiltem Schieber
JP3379947B2 (ja) * 1999-04-15 2003-02-24 株式会社島精機製作所 編機の複合針
DE19950259C1 (de) * 1999-10-18 2001-01-25 Groz Beckert Kg Schiebernadel mit asymmetrisch geteiltem Schieber

Also Published As

Publication number Publication date
EP1229159A4 (en) 2003-01-15
TW528822B (en) 2003-04-21
ES2259614T3 (es) 2006-10-16
DE60027753T2 (de) 2006-09-28
KR100585262B1 (ko) 2006-05-30
KR20020043234A (ko) 2002-06-08
JP3532897B2 (ja) 2004-05-31
US6510713B1 (en) 2003-01-28
DE60027753D1 (de) 2006-06-08
EP1229159A1 (en) 2002-08-07
WO2001031102A1 (fr) 2001-05-03

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